scrolling whilst using all three zones on mixer

the three zones on the mixer L . C . R.
don’t scroll if you put a lot of channels in the left zone
I want to have my Audio and FX in the left zone
my groups in the middle zone
my output busses and certain groups on the right channel…
the status quo is yes this can be done but ….large track counts will block the scrolling …
any way of fixing this
or …reconfigure the zones that this can work regardless of track counts ??